Grease-cup.



R. M. MUSGROVE & P. R. HOWARD. GREASE CUP.

APPLICATION FILED FEB.4,1914.

1,106,153, Patented Aug/1,1914,

. IIIIIMWHIHIII 11 if I A TTQOHIVEVS any UNITED STATES PATENT UFFMJE.

ROY MERL MUSGROVE AND FRED R. HOWARD, OF SA LT LAIsIE CITY, UTAH.

REASE-CUP.

grease from the cup to the member to be i u bricated. The invention isapplicable to the rotary parts of locomotives, stationary and tractionengines, and other machinery.

The invention resides in certain features relating to the piston andpiston rod, whereby to limit the forward movement of the piston underthe action of the spring, so as to limit the total feed of the piston toany desired extent, the adjusting means being capable of holding thepiston in retracted position against the movement of the spring, therebycutting out the automatic feed feature.

The invention will be particularly explained in the specific descriptionfollowing.

Reference is to be had to the accompanying drawings forming a part ofthis specificati'on, in which similar characters of reference indicatecorresponding parts in all the views. V

Figure 1 is a longitudinal vertical section on the line 1-1 of Fig. 3:Fig. 2 is a similar section atright angles to the section shown in Fig.1; and Fig. 3 is a plan view with parts in section, on the line 3-3 ofFig. 1.

In constructing a grease cup embodying our invention in accordance withthe particular practical embodiment illustrated, the body 10 of the cupis made of any suitable capacity and shape to adapt it to the particularmachine'element 11. A screw plug 12 is provided to engage the machineelcment 11, and has a through bore 13 for the delivery of the lubricant.The upper end of the screw plug is shown as provided with a flange 12 toclamp the bottom of the on 10. 4

he cap 14 has threaded engagement with the cup 10 and in order to lockthe cap in osition to which it has been screwed on t e cup 10,peripheral recesses 15 are formed in the cap and adapted to receive aSpecification of Letters Patent.

Application filed February 4, 1914.

Patented Aug. 4, 1914. Serial No. 816.491.

plate spring 16, which is suitably secured to the cup 10 as by setscrews 17 17. So long as the cap is engaged even by one thread,

it will be maintained by the spring 16 against displacement.

The-piston rod 18 is movable through the cap 14 and carries a piston 19operating in the cup 10 under the influence of a helical spring 20,which surrounds the piston rod and bears at its lower end against theback of the piston, the upper end of the spring abutting the cup 14 oran interposed washer or packing disk 21.

In order to provide for limiting the forward movement of the piston 19,whereby to limit the total feed of the piston under the influence of thespring 20, a stop 22 is provided in connection with, the piston rod 18.Said stop is threaded on a spindle 23 and operates in an elongated slot24 extending transversely through the piston rod. The end lugs 22 of thestop project laterally beyond the piston rod and may be caused to engagewith the cap 14. The

outer end of the spindle 23 has a head 25 for turning the spindle,whereby to adjust the position of the stop 22.

\Vhen it is desired to have the piston 19 free to feed the completecharge of grease in the grease cup, the lugs 22 of the stop 22 will beso positioned as to be in register with passages 26 that extend throughthe cap 14. a sufficient distance to permit the piston to be inovedsubstantially to the bot tom of the grease cup. The piston rod iscapable of being turned in the cap 14 so as to dispose the lugs 22 ofthe stop 22 out of register with the passages 26 and to be in line withblind recesses 27, in the form of depressions in the face of the cap,said recesses being in angular position relatively to the passages 20.\Vith the lugs 22 in line with the recesses 27, the forward move ment ofthe piston will be limited by the engagement of the lugs 22* in therecesses. Since the turning of the threaded spindle 23 will advance orretract the stop 22, the latter may be advanced to a position such thatwhen engaged in the recesses 27, the spring 20 willbe compressed and thepiston 19 held at the upper end of the cup; thus the automatic feedfeature will be eliminated.

The cap 14 may have a squared boss 14 for receiving a wrench if desired.

Having thus described our invention, we 3; A grease cup having a cap, aspringclaim as new and desire to secure by Letpressed piston in said cuphaving a piston ters Patent: rod extending through the cap, andhaving 1. A grease cup having a cap, a spring an elongated slotextending transversely, a

5 pressed piston in the cup having a piston spindle ranginglongitudinally of the piston 30 rod extending through the cap, and astop on rod, and a stop threaded on the spindle and the piston rod, thecap having a passage to formed with lugs pro ecting laterally bepermitthe stop to pass through. the cap, to yond the piston rod, the caphaving pasaiford freedom for the piston to move forsages for the stopand its lugs, permitting wardly, and said stop being movable to a aforward movement of the piston, the cap 35 position out of line with thesaid passage to furthermore having depressions disposed arrest theforward movement of the piston. angularly to the passages, whereby toar- 2. A grease cup having a cap, a; piston rest the lugs and limit theforward moveoperating in the cup and having a piston ent ft e pls on. .1

rod passing through the cap, said rod be: In testimony whereof We haveslgned our 40 ing formed With an elongated slot extending names to thisspecification in the presence of transversely through the rod, means toadtwo subscribing Witnesses.

, vance the piston, a threaded spindle ranging ROY MERL MUSGROVE.

longitudinally of the piston rod to turn FRED R. HOWARD.

' relatively to the latter, and a stop disposed Witnesses as to Roy MerlMusgrove:

in the slot of the piston rod and having Mrs. NEWTON KELLY, threadedengagement with the spindle, said Orson DAVIS. stop being adapted tocontact with the cap Witnesses as to Fred'R. Howard: and limit theforward movement of the A. T. Moons,

piston. v E. J. WILLs.

Copies of this patent may he obtained for five cents east, by addressingthe (lomniisslonerv of reiterate.

' Washingtohyll. t1,

